nvme: parse format nvm command details when tracing

Add detailed parsing of format nvm admin command to make the
trace log more consistent and human-readable.

Signed-off-by: Michal Krakowiak <michal.krakowiak@intel.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Minwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 5c3cb6928f3cecefc0c3c9380b695ea75611da8e..e0400de713b55fb362817f9b60a380e082609771 100644 (file)
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -102,6 +102,23 @@ static const char *nvme_trace_get_lba_status(struct trace_seq *p,
        return ret;
 }
 
+static const char *nvme_trace_admin_format_nvm(struct trace_seq *p, u8 *cdw10)
+{
+       const char *ret = trace_seq_buffer_ptr(p);
+       u8 lbaf = cdw10[0] & 0xF;
+       u8 mset = (cdw10[0] >> 4) & 0x1;
+       u8 pi = (cdw10[0] >> 5) & 0x7;
+       u8 pil = cdw10[1] & 0x1;
+       u8 ses = (cdw10[1] >> 1) & 0x7;
+
+       trace_seq_printf(p, "lbaf=%u, mset=%u, pi=%u, pil=%u, ses=%u",
+                       lbaf, mset, pi, pil, ses);
+
+       trace_seq_putc(p, 0);
+
+       return ret;
+}
+
 static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
 {
        const char *ret = trace_seq_buffer_ptr(p);
@@ -159,6 +176,8 @@ const char *nvme_trace_parse_admin_cmd(struct trace_seq *p,
                return nvme_trace_admin_get_features(p, cdw10);
        case nvme_admin_get_lba_status:
                return nvme_trace_get_lba_status(p, cdw10);
+       case nvme_admin_format_nvm:
+               return nvme_trace_admin_format_nvm(p, cdw10);
        default:
                return nvme_trace_common(p, cdw10);
        }